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Slow get segment snapshot causes read timeout when there are multiple tables #7713

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JaySon-Huang opened this issue Jun 28, 2023 · 1 comment · Fixed by #7706 or #8102
Closed

Slow get segment snapshot causes read timeout when there are multiple tables #7713

JaySon-Huang opened this issue Jun 28, 2023 · 1 comment · Fixed by #7706 or #8102
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affects-6.5 This bug affects the 6.5.x(LTS) versions. affects-7.1 This bug affects the 7.1.x(LTS) versions. severity/major type/bug The issue is confirmed as a bug.

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@JaySon-Huang
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JaySon-Huang commented Jun 28, 2023 •
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Bug Report

Please answer these questions before submitting your issue. Thanks!

1. Minimal reproduce step (Required)

image
image

2. What did you expect to see? (Required)

The time cost by acquiring segment snapshot should be acceptable. For example, within hundred ms

3. What did you see instead (Required)

The time cost by acquiring segment snapshots causes more than 30 seconds

4. What is your TiFlash version? (Required)

7aafea8
@JaySon-Huang JaySon-Huang added the type/bug The issue is confirmed as a bug. label Jun 28, 2023
@JaySon-Huang JaySon-Huang mentioned this issue Jun 28, 2023
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ti-chi-bot bot pushed a commit that referenced this issue Jun 28, 2023
@JaySon-Huang
Reduce UniPS snapshot stat overhead (#7706)
787ab97 
close #7713
@JaySon-Huang JaySon-Huang added affects-6.5 This bug affects the 6.5.x(LTS) versions. affects-7.1 This bug affects the 7.1.x(LTS) versions. and removed feature/developing labels Jun 28, 2023
This was referenced Jun 28, 2023
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Merged
@JaySon-Huang JaySon-Huang changed the title Disagg read timeout under S3 arch Slow get segment snapshot causes read timeout when there are multiple tables Jun 30, 2023
ti-chi-bot bot pushed a commit that referenced this issue Jun 30, 2023
@ti-chi-bot
Reduce UniPS snapshot stat overhead (#7706) (#7716)
e88b2f8 
close #7713
ti-chi-bot bot pushed a commit that referenced this issue Jul 3, 2023
@ti-chi-bot
Reduce UniPS snapshot stat overhead (#7706) (#7715)
ca5a2f2 
close #7713
@JaySon-Huang
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JaySon-Huang commented Sep 15, 2023 •
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Reopen because it leads to the max snapshot lifetime not shown on Grafana

affects version:
v6.5.3, v6.5.4, v6.5.5; fixed on v6.5.6
v7.1.1; fixed on v7.1.2

@JaySon-Huang JaySon-Huang reopened this Sep 15, 2023
@JaySon-Huang JaySon-Huang mentioned this issue Sep 15, 2023
Merged
12 tasks
ti-chi-bot bot pushed a commit that referenced this issue Sep 15, 2023
@JaySon-Huang
*: Fix max snapshot lifetime is now shown on Grafana (#8102)
85285a8 
close #7713
This was referenced Sep 15, 2023
Merged
Merged
ti-chi-bot bot pushed a commit that referenced this issue Sep 21, 2023
@ti-chi-bot
*: Fix max snapshot lifetime is not shown on Grafana (#8102) (#8103)
99b6297 
close #7713
ti-chi-bot bot pushed a commit that referenced this issue Sep 21, 2023
@ti-chi-bot
*: Fix max snapshot lifetime is not shown on Grafana (#8102) (#8104)
e9e4e55 
close #7713
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affects-6.5 This bug affects the 6.5.x(LTS) versions. affects-7.1 This bug affects the 7.1.x(LTS) versions. severity/major type/bug The issue is confirmed as a bug.
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